Provided are a pressure-sensitive adhesive composition, an optical laminate, a pressure-sensitive adhesive polarizing plate and a display device. When a particular block copolymer forming a micro phase separation region in a crosslinking structure is used, and a cohesive strength of the block copolymer is controlled, a pressure-sensitive adhesive composition having excellent physical properties required for an optical member, and particularly having excellent bending preventability, cuttability and pressure-sensitive adhesive durability may be provided. Such a pressure-sensitive adhesive composition may be used for optical uses, for example, to laminate various optical members, or apply an optical member to a display device.